Half to geoege alfred lanatjx



(NoMo deL) I J. D. BELT ON.

RIGB HULLING MAGHINE. I

No. 376,626. Patented Jan. 17, 1888.

N. PETERS, Fholo-Lilhugnpber. Washington. 0. a

' UNITED STATES PATENT JOHN DIXON BELTON, OF NEW ORLEANS, LOUISIANA, ASSIGNOR OF ONE- HALF TO GEORGE ALFRED LANAUX, OF SAME PLACE.

RlCE-HULLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 376,626, dated January 17, 1888.

Application filed April raiser.

To all whom, it may concern:

Be it known that I, JOHN DIXON Barron, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of 5 Louisiana, have invented new and useful Improvements in Rice Hulling Machines, of which the following is a specification.

My invention relates to improvements in rice-huller machines, or, rather, in a machine r to do the the same work as an ordinary ricehuller by means of the mechanism illustrated in the accompanying'drawings, in which like letters refer to like parts.

Figure 1 is a verticalscction. Fig. 2 is a I5 cross-section through line A B of Fig. 1. Fig.

3 is a portion of outside view of lower end of themachine and showing how driven from below.

At Fig. l the machine is represented driven from above by friction (or toothed) wheels 0. The vertical shaft D passes through the ma chine and sets in a step at E, secured to a timber, F.

G is'the mortar or bowl.

I H is a solid bottom bolted into the lower end of mortar G,and hasin it astuffing-box, I, with gland J, so that; shaft D can be packed where it passes through. On shaftD is a fixed double or single threaded screw, K.

L is a cylinder open at both ends, in which the screw K revolves. The cylinder L is stationary and bolted to shell of mortar G by bolts M. At this lower end of cylinder L is a telescopic adjustable cylinder, N, that can be raised or lowered by bolts O,screwing through lugs l which are riveted to the adjustable cylinder N. The object of this adjustable cylinder N is to increase or diminish the'dista'nce between its lower end and the bottom H, so

40 that when the screw K revolves the rice may be subjected to a less or greater friction as it passes through the opening Q. At R is the opening for discharging the rice after the bran has been rubbed off.

When the machine is in operation and charged with rice, the screw K revolves so as to carry the rice upward contained in the cylinder L until the rice overflowsat top of cylinder L into the space between cylinder L and 5e shell of mortar G. The rice continually feeds Serial No. 235,929. (No model.)

nary rice-hullers, but with less liability to.

crack the rice-grains, and produces more satisfactory results.

The central cylinder, L, may be made in one piece and be adjustable upward or downward to increase ondiminish the space Q; or

it may be fixed at a certain distance from the bottom H without being adjustable.

The screw K can be run in the reverse direction, so that the rice will descend the central cylinder and be forced out at lower end through the annular space Q, thus subjecting the rice to a greater friction than when the rice descends, as before described, and ascends the central cylinder, L. The screw K may be of any suitable shape to effect the purpose, but preferably slightly eoncaved on the under side of the blade.

This machine is not only applicable to the cleaning of rice, as described, but may also be used to polish coffee or other berries or grains.

' \Vhat I claim, and ,desire to secure by Letters Patent, is-

1. The combination of the bowl G, a cylinder, L, secured vertically in saidbowl and open at both ends, a rotating vertical screw,

K, arranged vertically in said cylinder and extending therethrough, and means for rotating the screw, substantially as described.

2. The combination of the bowl G, a stationary cylinder thereiu,open at each end and terminating at a distance from the upper and lower ends of the bowl, the lateral bolts M, extending from thecylinder to the shell ofthe bowl, and a screw, K, arranged within the cylinder and extending beyond each end thereof, substantially as described.

3. The combination of the bowl G, a vertical cylinder, L, arranged therein, a cylinder, N, adjustable vertically at the lower end of the said vertical cylindeiyand a rotating screw,

IOO

K, extending through both cylinders,snbstant'ially as described.

tical cylinder L therein, the lateral brace-bolts M for said cylinder, a vertically adjustable cylinder, N, at the lower end of the said verlieal cylinder, and having lateral lngs P, and screws 0, engaging the lugs for adjusting the lower cylinder, substantially as described.

bowl, G, having a bottom outlet, R, a central stationary cylinder, L, arranged vertically in said bowl and having a telescopic end, N, above the bottom outlet, and a rotating screw extending vertically through the vertical stationary cylinder and through its telescopic end, substantially as described.

JOHN DIXON BELTON.

4. The combination of the bowl G, the ver- Witnesses:

FREDERIO 000K, F. Kmcnnnn.

5. The combination, in a rice-huller, of a 

